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Finding the Fourth Proportional to 684,315.50, 944,335.77 and 378,386.54

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Solution

The fourth proportional to 684,315.50, 944,335.77 and 378,386.54 is: 522,162.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,315.50 : 944,335.77 = 378,386.54 : x
  2. Step 2: Convert to fraction form
    684,315.50/944,335.77 = 378,386.54/x
  3. Step 3: Cross multiply
    684,315.50x = 944,335.77 × 378,386.54
  4. Step 4: Simplify right side
    684,315.50x = 357,323,944,608.54
  5. Step 5: Solve for x
    x = 357,323,944,608.54/684,315.50
  6. Step 6: Final answer
    x = 522,162.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.